Finding the Third Proportional to 345,870 and 745,103

Step by Step Solution

1. Step 1: Write the proportion equation
   345,870 : 745,103 = 745,103 : x
2. Step 2: Convert to fraction form
   345,870/745,103 = 745,103/x
3. Step 3: Cross multiply
   345,870x = 745,103 × 745,103
4. Step 4: Simplify right side
   345,870x = 555,178,480,609
5. Step 5: Solve for x
   x = 555,178,480,609/345,870
6. Step 6: Final answer
   x = 1,605,165.18